<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>login</title>
</head>
<body>
 <form action="/login" method="post">
   <p>user name:<input type="text" name="username"></p>
   <p>password:<input type="password" name="password"></p>
   <p><input type="submit" value="login"></p>
 </form>
</body>
</html>
